@article{beruski_pereira_2014,  title={Validation study of an overall radiation balance estimation method under Ponta Grossa (PR) Brazil weather conditions},  volume={34},  ISSN={0100-6916},  url={https://doi.org/10.1590/S0100-69162014000300010},  DOI={10.1590/S0100-69162014000300010},  number={3},  journal={Engenharia Agrícola},  publisher={Associação Brasileira de Engenharia Agrícola},  author={Beruski, Gustavo C. and Pereira, André B.},  year={2014},  month={May},  pages={461–472} }